soft_spi does not get probed in DM
Hi Jagan,
On a mx7dsabresd board I am not being able to probe the soft_spi driver using DM with mainline U-Boot.
Device tree used is the same one as used in the kernel (imx7d-sdb.dts).
soft_spi driver is used to communicate with a I/O expander (supported via CONFIG_DM_74X164), but it can't get probed:
spi 0 [ ] soft_spi |-- spi4
which causes the the I/O expander to not get probed as well.
What needs to be done for soft_spi to get probed in DM?
The "spi-gpio" compatible is present, CONFIG_SPI_SOFT is enabled.
We need to use the I/O expander to reset the Ethernet PHY and bring Ethernet functionality back.
Thanks,
Fabio Estevam
Hi Fabio,
On Tue, Jan 28, 2020 at 7:07 PM Fabio Estevam festevam@gmail.com wrote:
Hi Jagan,
On a mx7dsabresd board I am not being able to probe the soft_spi driver using DM with mainline U-Boot.
Device tree used is the same one as used in the kernel (imx7d-sdb.dts).
soft_spi driver is used to communicate with a I/O expander (supported via CONFIG_DM_74X164), but it can't get probed:
spi 0 [ ] soft_spi |-- spi4
which causes the the I/O expander to not get probed as well.
What needs to be done for soft_spi to get probed in DM?
Hope you have aliases spi0 = &spi4 here?
Jagan.
Hi Jagan,
On Tue, Jan 28, 2020 at 10:56 AM Jagan Teki jagan@amarulasolutions.com wrote:
Hope you have aliases spi0 = &spi4 here?
Even if I add the alias the soft_spi does not get probed.
Any ideas?
Hi Jagan,
On Tue, Jan 28, 2020 at 11:03 AM Fabio Estevam festevam@gmail.com wrote:
Hi Jagan,
On Tue, Jan 28, 2020 at 10:56 AM Jagan Teki jagan@amarulasolutions.com wrote:
Hope you have aliases spi0 = &spi4 here?
Even if I add the alias the soft_spi does not get probed.
Any ideas?
The error was in the drivers/gpio/Makefile logic. I managed to fix it and submitted a patch.
Thanks
participants (2)
-
Fabio Estevam -
Jagan Teki